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(No Model.) 2 SheetsSheet l.

O. B. HATFIELD.

SKIVING MACHINE. No. 363,461. Patented May 24,1887.

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' Mme (No Model.) 2 Shets-Sheet 2.

O. B. HATFIELD.

SKIVING MACHINE.

N0. 363,461. Patented-May- 24, 1887.

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UNITED STATES PATENT OFFICE.

ASSIGNMENTS, TO THE ROCHESTER SHOE MAOHINERY COMPANY, OF

SAIWIE PLACE.

SKlVING-MACHINE.

SPECIFICATION formingpart of Letters Patent No. 363,461,1hted May 24,1887.

Application filed June 30, 1886.

Serial No. 206,744. (No model.)

To all whom it may concern.-

Be it known that I, CHARLES B. HATFIELD, of Rochester, in the county of Monroe and State of New York, have invented certain new and 5 useful Improvements in Skiving Machines; and I do hereby declare the following to be a full, clear, and exact description of the same,

. reference beinghad to theaccompanyingdrawings, forming a part of this specification, and

I to the figures and letters of reference marked thereon.

My invention relates to that class of machines employed in skiving or beveling the edges of leather; and it consists in certain novel featu res of construction and combinations ofparts, which I will first describe, and then point out particularly in the claims at the close of this specification.

In the accompanying drawings, Figure represents an elevation of a machine constructed in accordance with my invention. Fig. 2 is a longitudinal vertical section, and Fig. 3 a top plan view, ofthe same. Fig. 4 is a detail view of the feedrollers. Fig. 5 is a detail View of the bandsharpener; Fig. 6, a similar view of the roller by which vibration of the band is prevented, and by which the angle at which the band cuts is regulated. Figs. 7 and 8 are sectional views of the pulleys which 0 support and drive the band.

Similar letters of reference in the several ures indicate the same parts.

The letter A designates the frame of the machine; B, the work-support; G, a thin steel 3 5 band sharpened at one edge, as shown in Figs. 4, 7, and 8, supported upon pulleys D E, as shown in Figs. 2 and 3, and inclosed and protected by a guard or easing. C, as shown in Figs. 1 and 2. The pulley E drives the band,

and is itselfdriven from the main driving-shaft G by a belt, F.

H and I are two rollers for feedingthe work to the cuttingband. One of these rollers, H, is arranged so that its periphery projects slightly above the upper surface of the table B in proximity to the cutting-baud, and is adapted to be'driven by a belt, Q, from the main driving-shaft G, while the other one, I, is mounted upon ahinged arm, K, and is normally kept pressed down upon the roll II by V means of a spring, L.

M is a friction wheel or roller mounted in a frame, N, which slides vertically in a hanger, O, secured to the under side of the table, and is rendered adj ustabl'e by means of aset-screw, P, so as to bear with more or less pressure against the cutting-blade, as shown in Fig. 2. The function of this wheel M is twofold-that is to say, it operates, first, by affording a support for the cutting-band near thepoint where the cutting is done, to prevent undue vibration of the band; and, secondly, by its capability of adjustment it enables the pitch or angle of the cutting-blade to be varied, so as to effect a corresponding variation in the pitch of the bevel made on the work.

The shafts or studs R R, upon which the pulleys D and E are mounted, may be longi tudinally adjusted in the bearings by the ma nipulation-of set-screws S S, which confine them, so as to enable the cuttingbandto be laterally adjusted with respect to the rollers M and feed-rollers H I, and the shaft or stud R of the pulley D may also be laterally shifted by means of adjustingscrewsT T, so as to increase or diminish the tension of the cutting band at pleasure.

U is apin or projection of any kind, secured to the table in proximity to the fcedrollers, and serving as a gage for properly directing and guiding the work as it is fed by the rollers H and I to the cutting-band.

V is an emery-wheel driven by a belt, W, from the main shaft G,and adapted to be thrown into or out of cont-act with the cutting-band by means of ascrew, spring, or adjustable nut ap plied to one of its journals, as shown in Figs. 2 and 5.

The foregoingdescription, it is believed, will enable the operation of the machine to be readily understood.

Assuming the machine to be in motion, the

operator has only to place the leather to be skived upon the table and insert it between the rollers H I, having a care that the edge to be operated upon is against the gage U, whereupon the feed-rollers will carry it forward and subject it to the action of the rapidly'moving v cutting-band, which will perform its duty in the most thorough and efficient manner. To change the pitch of the bevel produced, it is only necessary to change the adjustment of the rollers M by manipulating the set-screw P, and when, for the quality of the work, it becomes evident that the blade requires sharpening, the grinding-wheel V may be thrown instantly into operation without interfering with the progress of the work in the slightest. It will be observed that the band is entirely inclosed and protected save at the cuttingpoint, and that therefore theliability of injury to the operator is reduced to the minimum.

Having thus described my invention, what I claim as new is .7 V

1. In a skivingniachine, the combination, with the table or support for the work, of an endless cutting-band, a bearing for said band applied near the cutting-point, and an adj usting mechanism, such as described, for adjusting said bearing against the face of the band, whereby the pitch or angle of the cutting-band is enabled to be varied so as to effect a corresponding variation in the pitch of the bevel made on the work, substantially as described. 2. Tn a skivingniachine, the combination, with an endless cutting-band, of a roller-bearing applied to said band near the cuttingpoint, and devices, substantially such as described, for adjusting said roller vertically, substantially as and for the purpose specified.

3. In a skiving-machine, the combination,

substantially as described, of an endless cutting-band, a tableor support for the work, feedrolls, anda gage, such as U, on the table, as set forth.

4. The combination, with the endless cutting-band, its supporting-pulleys, the table or work support, the feeding-rolls, and devices, substantially such as described, for adjusting the supporting-pulleys so as to bring the cutting-band nearer to or farther from the feeding-rolls, substantially as described.

5. The combination, with the endless cutting-band, of the grinding-wheel and means, substantially as described, for throwing said wheel into and out of contact with the cuttingband, substantially as described.

6. The combination, with the endless cutting-band, the pulley bearing near the cuttingpoint,and the feed-table, ofthe grinding-wheel having one fixed and one movable bearing, and the screw and nut for adjusting the movable bearing from thetop of the table so as to throw the grindingwheel into and out of operation, substantially as described.

'7. The combination of the band-knife, the driving and supporting pulleys, the supporting-table, the roller for preventing vibration, the feed-rollers, and the gage, substantially as described.

CHARLES B. HATFIELD. \Vitnesses:

ALEX. S. STEWART, THOMAS DURANT. 

